Gyratory structures.



G. W; COMBS.

GYRATORY STRUCTURE.

APPLICATION FILED AUG. 18,1908.

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G. W. COMBS.

GYRATORY STRUCTURE.

APPLICATION man AUG-1B. 1908.

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Patented July 25, 1916.

2 SHEETS-SHEET 2- 1V] T NESSES GEORGE W. COMIBS, 0F LEAVENWORTH, KANSAS.

GYRATORY STRUCTURE.

Specification of Letters Patent.

Patented July 25, 1916.

. Application'filed August 18, 1908. Serial No. 449,077.

To all whom it mag/concern:

Be it known that I, GEORGE W. (Jones, a citizen of the United States,residing at Leavenworth, in the county of Leavenworth and State ofKansas, have invented certain new and useful Improvements in GyratoryStructures, of which the following is a specification.

This invention relates to improvements in gyratory structures, such asflour sifters, etc, and my object is to overcome excessive throw of thestructure. This excessive throw in flour sifters usually occurs beforethe sifter attains critical speed. It also occurs when one of the sieveboxes becomes overloaded with stock and overbalances its companion, andwhen the sifter has a rigid connection with the building, as through itsdrive-shaft and a stationary bearing con siderable strain is imposedupon the building whenever the sifter leaves its true gyratory course.

I relieve the building of abnormal strain and overcome abnormal throw ofthe structure by driving the same with a combination driving andrestraining means.

In order that the invention may be fully understood, reference will nowbe made to the accompanying drawings in which,

Figure 1 represents a vertical section of a gyratory structure, providedwith my improvements. Fig. 2 is a horizontal section on line 11-11 ofFig. 1. Fig. 3 is a horizontal section on line III-III of Fig. 2. Fig. 4is a side elevation, partly in section, of a modified form of theinvention. Fig. 5 is a side elevation of the modified form of thecombination driving and restraining means. Fig. 6 is a horizontalsection On line VIVI of Fig. 5. t

1 designates the structure whichis freely supported from the ceiling ofthe building by flexible rods 2 and provided with a centrally-disposedvertically-positioned shaft 3 which is provided with means, consistingpreferably of cranks 4:, for imparting a gyro.- tory movement to thestructure.

5 designates a step-bearing provided with a concave seat 6 forsupporting shaft 3 which has slight vertical movement. in the structurebearings 7 so that said shaft may move up and down on the concave seat.

8 designates a ball interposed between the end of shaft 3 and seat 6'toreducethe friction to a minimum, said ball being held in positionbeneath the lower terminalof the shaft by a sleeve 9, see Fig. 3.Bearing 5 is preferably secured to the floor of the building and isprovided with an upwardly extending wall 10 forming a lubricant chamber11, for ball 8 to operate in,-said lubricant chamber 11 being closed bycap 12, loosely embracing sleeve 9.

13 designates a rotary member, preferably in the form of a pulley, whichis fixed to the lower portion of shaft 3. That portion ofthe shaft uponwhich the pulley is mounted is in line with the main axis of the shaftand constitutes the center ofrotation thereof.

14 designates an endless belt for driving pulley 13 and restraining thestructure from abnormal throw. Said belt is driven by twodiametrically-opposed stationary drivers 15, fixed upon a pair ofcounter-shafts 16, provided with bevel gear wheels 17, intermeshing witha pair of bevel gear wheels 18, fixed upon a drive-shaft 19, whichextends through the bifurcated lower portion of the step-bearing 5.Bevel gear wheels 18 are slidably mounted on shaft 19, so that saidwheels may be shifted longitudinally upon the shaft to retain them inmesh with gear wheels 17 when the latter are adjusted laterally, ashereinafter described. Bevel wheels 18 have the customary groove andfeather connection (not shown) with shaft 19 so they will be rotated bythe latter. Countershafts l6 and shaft 19 are journaled in bearings 21,adjustably mounted upon a pair of bases 22, provided with screws 23 forengaging andadjusting bearings 21 laterally upon the bases. By adjustingbearings 21 laterally together with drivers 15, belt let may betensioned as desired and thus perform its function of not only drivingpulley 13, but also restraining the structure from abnormal throw. Whenbearings 21, together' with the parts they carry, are adjustedlaterally, bevel wheels 18 are adjusted therewith by the upwardlyextending members2O to retain them inmesh with the bevel gears 17.

' Referring now to the modified-form shown in Figs. 4, 5 and 6: 1designates the structure, 2 the flexible rods, whereby it is suspended,and 3 a vertically-positioned shaft which is journaled incentrally-disposed bearings? on the structure. Said shaft is providedwith a crank-pine and two eccentric weights 9, whereby a gyratory motionis imparted to the structure. Crankpin i is mounted on t e concave seat6- of a step-bearing 5, a ball 8 being interposed between the crank-pinand the concave seat to reduce the friction to a minimum. Ball 8 is heldin position by a sleeve '9, secured to the lower terminal of thecrank-pin 4: Bearing 5 has an upwardly extending wall 10 forming alubricant chamber 11 which is closed by a cap 12*, loosely embracing thesleeve. Crank-pin 4} is provided with a pulley 13, which is driven by anendless belt 146, extending around idlers 24 and a stationary-driver 15,which latter is mounted upon a drive-shaft 19. Idlers 24 are mountedupon countershafts 16, mounted in bearings 21, slidably mounted uponbases 22 whereby bearings 21 are adjusted laterally. By thus adjustingthe bearings, belt 1& may be tensioned as desired.

Having thus described my invention, what I claim is:

1. In combination, a body, a verticallypositioned shaft mounted therein,a stationary support for said shaft independent of the body,antifriction means interposed between the shaft and said support, andendless flexible restraining means for steadying said shaft.

2. In combination, a gyratory structure, a shaft thereto, a pulley fixedto said shaft, and flexible means for driving said pulley andrestraining abnormal throw of the structure.

3. In combination, a freely-supported structure, means for preventingrotation thereof, a pulley for the structure, and a flexible member fordriving said pulley and restraining abnormal throw of the structure.

4. In combination, a gyratory structure, a shaft therefor, a support forsaid shaft independent of the structure, a pulley fixed to said shaft,and an endless flexible member for driving said pulley and restrainingabnormal throw of the structure.

5. In combination, a gyratory structure, a. shaft thereto, a memberfixed to said shaft, endless means for driving said member andrestraining abnormal throw of the structure, and one or more stationarydrivers for driving the endless member.

6. In combination, a gyratory structure, a shaft thereto, a member fixedto said shaft, endless means for driving said mem her and restrainingabnormal throw of the structure, and one or more adjustably mounteddrivers for tensioning and driving the endless member.

7. In combination, a gyratory structure, a shaft thereto, a member fixedto said shaft, endless means for driving said member and restrainingabnormal throw of the structure, one or more stationary drivers fordriving the endless member, and gearing for driving said driver ordrivers.

I 8. In combination, a gyratory structure,

a shaft thereto, a member fixed to said shaft, endless means for drivingsaid member and restraining abnormal throw of the structure, one or moreadjustably mounted drivers for tensioning and driving the endlessmember, and adjustable gearing for driving said driver or drivers.

9. In combination, a gyratory structure, a shaft loosely mountedtherein, a support for the shaft independent of the structure, a pulleyfixed to said shaft, an endless belt for driving said pulley andrestraining abnormal throw of the structure, diametrically-opposeddrivers for driving said belt, and bevel gearing for actuating saiddrivers.

10. In combination, a gyratory structure, a shaft thereto, a memberfixed to said shaft, an endless member for driving said member andrestraining the structure from abnormal throw, a pair ofdiametrically-opposed drivers for driving said endless mem bers, andgearing for actuating said drivers.

11. In combination, a gyratory structure, a shaft thereto, a memberfixed to said shaft, an endless member for driving said rotary memberand restraining the structure from abnormal throw, a pair ofdiametrically-opposed drivers for driving said endless member,counter-shafts on which said drivers are fixed,bevel gears also fixed tosaid countershafts, a drive shaft, bevel gears adjustably mountedthereon and intermeshing with the first-mentioned bevel gears, a pair ofbases, and two sets of bearings for the shafts, each set of bearingsbeing adj ustably mounted on a base.

I 12. The combination of a normally-gyratable structure, and endlessrestraining means for steadying said structure.

13. The combination of ,a normally-gyratable structure, endlessrestraining means for steadying said structure, and means independent ofthe structure for supporting said restraining means.

14. The combination of a gyratory structure, yielding supports therefor,endless restraining means for steadying the structure, and additionalsupports for said restraining means.

15. The combination of a gyratory structure, a shaft extending throughthe same, a pulley on said shaft, and independentlysupported endlessrestraining means engaging said pulley to steady the structure.

16. The combination of a normallygyratable structure, and endlessflexible restraining means for steadying said structure.

17 The combination of a normally-gyratable structure, and anindependentlysupported endless belt for steadying said structure.

. 18. The combination of a structure, means for gyrating the same, apulley for said structure, and an independently-supported endless devicetraveling around said pulley to steady the structure.

19. The combination of a normally-gyratable structure, endlessrestraining-means for steadying said structure, and independent meansfor supporting and tensioning said restraining means.

20. The combination of a freely-supported structure, a shaft forimparting motion thereto and capable of gyratory motion, a step-bearingfor supporting the shaft, a flexible member independent of saidstep-bearing for steadying said shaft, and means independent of thestructure for supporting said flexible member.

21. The combination of a normally-gyratable structure, meansfreely-supporting the same, a shaft for said structure, twodiametrically-opposed drivers adjacent said shaft, and flexible meansconnecting the drivers and said shaft for driving the latter.

22. In combination, a gyratory structure having centrally-disposedbearings, a shaft journaled in said bearings for imparting motion to thestructure, a pulley fixed to the lower end of the shaft, two stationarydrivers adjacent said pulley, and an endless member connecting thepulley and said drivers.

23. In combination, a gyratory structure, a crank-shaft journaledtherein, a pulley fixed to said shaft in line with the major axisthereof, two stationary drivers at opposite sides of said pulley, and anendless member connecting the pulley and said drivers.

24. In combination, a gyratory structure, a shaft thereto, and anelement constituting both driving and restraining means for driving saidshaft and restraining abnormal throw of the structure.

25. In combination, av body, freely sup ported, a vertically positionedshaft mounted thereon, and an element constituting both driving andrestraining means for driving said shaft and restraining the body fromabnormal throw.

26. In combination, a gyratory structure having a centrally disposedbearing, a shaft mounted on said bearing, and an element constitutingboth driving and restraining means whereby the shaft is driven and thestructure is restrained from abnormal throw.

27. In combination, agyratory structure a shaft thereto, a support forsaid shaft independent of the structure, and an element constitutingboth driving and restraining means for driving said shaft andrestraining abnormal throw of the structure.

28. In combination, a body, a vertically positioned shaft mountedthereon, a stationary support for said shaft independent of the body,and an element constituting both driving and restraining means fordriving said shaft and restraining abnormal throw of the body.

29. In combination, a freely supported body, a shaft thereto, a supportfor said shaft independent of the body, an element constituting bothdriving and restraining means for driving said shaft and restrain ingabnormal throw of the structure, and a stationary driver independent ofthe body for driving said means.

30. In combination, a suspended structure, a shaft mounted thereon andprovided with means for imparting a gyratory motion to said structure,and an element constituting both driving and restraining means wherebythe shaft is driven and the structure is restrained from abnormal throw.

31. In combination, a structure freely supported for gyration, acrank-shaft thereto free to move laterally in any direction, a pulleymounted on a portion of said shaft in line' with the main axis thereof,and means for driving said pulley.

32. In combination, a gyratory body, a shaft therefor, a pulley fixed tosaid shaft, a stationary support for said shaft independent of thepulley, and endless means for driving the pulley and tending to restrainthe body from abnormal gyration.

33. In combination, a gyratory structure, a shaft therefor provided withmeans for imparting gyratory motion to thevstructure, and endlessflexible means for driving said shaft and tending to restrain thestructure from abnormal gyration.

34. In combination, a gyratory structure, a shaft centrally journaledtherein, a support for said shaft having an upwardly-extending Wallforming a lubricant chamber, and endless means for driving the shaft andtending to restrain the structure from abnormal gyration.

35. In combination, a gyratory structure, a shaft mounted therein, andendless flexible means for driving said shaft and tending to restrainthe structure from abnormal gyration.

36. In combination, a gyratory body, a shaft thereto, a support for saidshaft independent of the body, a pulley fixed to said shaft, an endlessrestraining member engaging said pulley to drive the same and restrainthe body from abnormal throw, and means for driving said endlessrestraining member.

In testimony whereof I aflix my signature in the presence of twowitnesses.

GEORGE W. (Jones.

Witnesses:

SIGURD ANDERSON, G. D. OBERSCHELP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0.

